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Table 3. Light path diagnostics (continued)
Lit LED Cause Action
Power module
System error A critical error has occurred in the power
module.
Reseat the power module. If the problem
remains, replace the module.
If your BladeCenter unit has a redundant
module for this power module, the BladeCenter
unit continues to function using the redundant
module.
Blower module
System error The blower has failed or is operating too
slowly.
Reseat the blower module. If the problem
remains, replace the blower module as soon
as possible, to regain cooling redundancy.
The BladeCenter unit continues to function.
The redundant blower module provides cooling
to the BladeCenter unit and blade servers.
I/O module
System error A critical error has occurred in the I/O module. Reseat the I/O module. If the problem remains,
replace the module.
58 BladeCenter Type 8677: Installation and User’s Guide